Means for pumping water under hydraulic power.



PATBNTED NOV. l2, 1907.

J. D. HOBBS.

vMEANS FOR PUMPING WATER UNDER HYDRAULIC POWER.

APPLICATION FILED FEB. 16, 1906.

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110.870,882. EATENTED Nov. 12, 1907.

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APPLICATION FILED FEB.15, 1906,

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PATENT OFFICE.

JOSEPH D. HOBBS, OF MEDIAPOLIS, IOWA.

MEANS FOR PUMPING WATER UNDER HYDRAULIC POWER.

No. 870,882. l

Specification of Letters Patent.

Patented Nov. 12, 1907.

Application filed February l5. 1908. Serial No. 301.250.

To all whom it may concern:

Be it known that I, JOSEPH D. HoBBs, a citizen of the United States, residing at Mediapolis, Iowa, have invented certain new and useful Improvements in Means` for Pumping Water Under Hydraulic Power, of which the following is a specification.

My invention relates to means for pumping water under hydraulic power; and it consists in the features and combinations of parts hereinafter particularly described, and pointed out in the claims.

In the accompanying drawings, Figure l is a side view oi the invention with parts in section. Fig. 2 is a vertical sectional view of the invention. Fig. 3 is a plan view of Fig. 2 with parts in section. Fig. 4 is a sectional view substantially on line 4-4 of Fig. l. Fig. 5 is a section on line 5 5 of Fig. l. Figs. 6, 7 and 8 are sectional detail views, and Figs. 9 and 10 are detail Views of the supply pipes for the hydraulic power.

In the drawings the numeral l designates a pump cylinder which is eccentrically held within a cylindrical casing 2, preferably by means of integral head blocks la. Within the pump cylinder works the pump piston 3 carried by the tubular piston rod 4, which extends on both sides of the piston and projects through suitably packed caps or stuffing boxes 5. The piston may conveniently be formed of two metallic plates 3 and 3, with a washer or washers 3b clamped therebetween and the piston rod of two sections connected to threaded bosses on the plates as clearly shown in Fig. 2. One o the plates has its boss formed tubular and internally threaded as shown at 3c for engagement with a correspondingly threaded boss 3d passing through a central opening in the Washer or washers and serving to detachably connect the parts together.

Secured to the ends of the casing are cap blocks 2l1 which may conveniently be held in place by flanged and threaded collars 2b, suitable packing 2 being provided to insure a tight joint. The cap blocks are re- ,cessed to provide the passages 7 and have threaded Openings to these passages, in line with pump cylinders, into which are screwed the cylinder extensions 8, the outer ends of which may conveniently be closed by caps 8a. The ends of the tubular piston are designedfto work in these cylinder extensions and are provided with piston heads 6 sufiiciently less in diame ter than the interior diameter of the cylinder extensions to permit the passage of the water.

Within the case and between the heads or blocks lEL is located a valve block 29 which has a central circular valve chamber 3l connected by passages 30 and 30 through the valve block and head blocks with the upper and lower passages or chambers 7.

Thewater for the hydraulic power is supplied by pipes 27 connected to any suitable source of water supply (not shown), and communicating through the upper cap `block with the space 18 within the casing.

This motive water or uid is designed to be admitted, by the valve mechanism hereinafter described, first to one cylinder extension 8 through the passages 3() and 7 and then to the opposite one through passages 30 and 7. The pressure ofthe water alternately on the piston 6 on opposite ends of the piston rod, reciprocates the piston. It will be understood of course, that the casing 2 is submerged in the water of the well from which the supply is to be drawn, and the water is admitted to the opposite ends of the cylinder l through passages 23 in the head blocks l, these passages having their outer ends fitted with perforated removable plugs 23 which hold in place the check valves 24. The passages 23 communicate with passages 22 leading upward through the cap block where they connect by couplings 22 with the branches 35 connecting in turn with a delivery pipe 36 whichmay be tapered as shown at 36 to increase the velocity of the water.

The manner in which the flow ot' water alternately'to opposite ends of the device is controlled will now be described-The valve chamber 3l is open to the interior of the casing so as to permit the valve chamber to be kept filled by the water under pressure supplied by the pipe 27. Within the valve chamber is located a double valve consisting of two valve segments 14 and l5 which have spring pressed Shanks seated in sockets formed in arms carried by a hub mounted on'a shaft or axle I6, and designed to be rocked by an arm I3 connected to the automatic controlling means hereinafter described. When the valve is in the position shown in Fig. l the passage 30 will be uncovered so that water under pressure is free to flow therethrough in the manner hereinbefore described. At the same time the valve segment l5 will he across the passage 30/ and a channel 15/ in the face of the segment will connect the vpassage 30/ with an exhaust passage 30 leading to the outside of the casing so that as the piston moves downwardly the water in the lower cylinder extension 8 can pass out into the well. During this time the unchanneled portion of the valve I4 will lie across the face of the corresponding exhaust port 30X, as shown more clearly in Fig. G. In order to operate this valve automatically I `connect the arm 13 with a piston rod l1 having pistons l2 on the upper and lower ends thereof working in cylinders l0 and 10/ respectively carried by the valve member 29. Ports 9 lead through the block and connect the interior of each cylinder l0 or 10/ with the water space of the casing, and an exhaust port 9 is provided leading from a point adjacent to each port 9 to the exterior of the casing. A slide valve I7 is pivoted in a recess 32 in the valve block adjacent to each set of ports and is designed when at one end of its stroke to uncover port 9 as shown in the lower part of Figs. l and 2 and in Fig. 8 to admit water under pressure to the cylinder 10/ Said slide is provided with a channel 17l which, when the valve is at the opposite extremity of its movement,

places the cylinder in communication with the exhaust port as shown in the upper part of Figs. 1 and 2 and in Fig. 7. The valves 17 are connected by a rod 19 so as to move in unison and it will be seen that as the Water under pressure is admitted iirst to one cylinder l or 10/ and then to the other the piston rod 11 is moved up and down, rocking the valve segments 14 and 15 with the results hereinbefore set forth. t

The valves 17 are automatically reversed when the piston 3 reaches the limit of its movement in either direction by the following mechanism. Rods 33 and 33/ are suitably connected as shown to the upper and lower valves 1 7 and are guided in recesses in the cap blocks. Arms 34 and 34/ carried by these rods project into the path of the overhanging flanges oi` the caps 6. Thus for instance, if the piston is moving down as represented in Fig. 1, when it nears the limit oi its downward movement the `iiange ofthe upper cap or head 6 will contact with the arm 34, depress the same and through the connection 33 to upper valve 17 and the rod 19 to the lower valve 17 reverse said valves. The result will be that pressure water will then be admitted to cylinder l0 and allowed to exhaust from cylinder 10/, moving piston rod 11 downward and through the connections hereinbefore described reversing the valves 14 and 15. By

this arrangement it will be seen that the valves 14 and 15 are positively held at the limit oi their movement in one or the other direction by the pressure in the corresponding cylinder l0 0r 10 until the valves 17 are reversed.

Having thus described my invention, what I claim is:

In combination, a pumping cylinder, a pumping piston therein having its piston rod extending through the heads of said cylinder, pressure piston heads on the ends of said piston rod, pressure cylinders in which the said heads operate, a valve block having a central cylindrical valve chamber, said valve chamber having an inlet port leading to each pressure cylinder and an exhaust port, a rocking valve carrying member in said cylindrical valve chamber, segmental valves yieldingly carried by said member, a piston rod connected with said member, pistons on the ends of said rod, cylinders in which said pistons Work, upper and lower valve chambers having inlet and exhaust ports, a pair of connected valves controlling said ports and movable projections adapted to be operated by the pressure piston heads and connections between said projections and the connected valves, substantially as described.

In testimony whereof, I ax my signature in presence of two witnesses.

JOSEPH D. HOBBS.

Witnesses z CHARLES A. LUNDUN, SAML. B. HEIZER. 

